Range
The distances at which rangefinders can effectively calculate distances can vary from 100 meters to up to 25 kilometers, and quite possibly much further if the investment warrants it. Generally the super long distance rangefinders are built for military purposes and used by snipers and artillery units.

Find the hazard or the flag
When you know the distance from you to either a hazard or the green it will help you immensely with you club selection.

The size and weight are among the most important considerations when purchasing a rangefinder. Hunters that will be stayed in the woods overnight need to take a great deal of supplies with them. Therefore, rangefinders for hunting need to be small so that they do not take up too much room in the pack. Likewise, you don’t want the device to add too much extra weight to your load.